Just a word of warning, the new BNR s3's seem to be experiencing boost control issues.
Some of them are creeping badly, others are barely able to hit 18-20psi.
One person on MSF has popped a motor on "spring pressure" others have seen boost spikes over 24psi.
One now has a stuck wastegate flapper.
Might be worth holding off on these for the moment.
Will keep you updated